# Automatically create subdomain with a domain preset whenever a floating IP is assigned to Virtual Machine > Goto Admin > Network > Networks, click on the `Network Name` from the list of your Networks then hit the action button `EDIT SUBNET`, go to Subnet Details and type in your DNS Name Servers, it should be your controller IP address or VIP and `SAVE` ## Setting the DNS of Network {#setting-the-dns-of-network} Goto Admin > Network > Networks, click on the `Network Name` from the list of your Networks then hit the action button `EDIT SUBNET`, go to Subnet Details and type in your DNS Name Servers, it should be your controller IP address or VIP and `SAVE` ![/assets/dns/DNSaaS06.png](/assets/dns/DNSaaS06.png) ## Connect to console {#connect-to-console} ```bash $ ssh root@192.168.1.210 Warning: Permanently added '192.168.1.210' (ECDSA) to the list of known hosts. Password: Welcome to the Cube Appliance Last login: Wed Feb 4 05:26:05 2020 from 192.168.1.22 # ``` ## Load server Credentials {#load-server-credentials} ```bash # . /etc/admin-openrc.sh ``` ## Create a Zone {#create-a-zone} ```bash # openstack zone create bigstack.co. --email hello@bigstack.co +----------------+--------------------------------------+ | Field | Value | +----------------+--------------------------------------+ | action | CREATE | | attributes | | | created_at | 2020-02-05T04:54:29.000000 | | description | None | | email | hello@bigstack.co | | id | 20af6f9c-b9a6-4b1d-a912-487b86fb9c6d | | masters | | | name | bigstack.co. | | pool_id | 794ccc2c-d751-44fe-b57f-8894c9f5c842 | | project_id | 03525522f7c547cd88627c626896d04a | | serial | 1580964869 | | status | PENDING | | transferred_at | None | | ttl | 3600 | | type | PRIMARY | | updated_at | None | | version | 1 | +----------------+--------------------------------------+ ``` ## [network_id] Show network list {#network_id-show-network-list} ```bash # openstack network list +--------------------------------------+-------------+--------------------------------------+ | ID | Name | Subnets | +--------------------------------------+-------------+--------------------------------------+ | 62420cb0-67c3-476a-ae7b-09d64698b303 | lb-mgmt-net | fcce41dd-b99a-482c-8117-b6791f6ae743 | | bdf01063-4500-4266-9363-36414ba6d252 | internet | 3caa9b99-e3a9-453c-9b91-13dd67fa78dd | | f5050464-a1e4-4e19-8c04-3949a5cf0340 | private | 24d713e8-5db4-4fc5-bac0-747547737bb0 | +--------------------------------------+-------------+--------------------------------------+ ``` ## [dns_domain] Set the private network [network_id] default domain as `bigstack.co.` {#dns_domain-set-the-private-network-network_id-default-domain-as-bigstackco} ```bash # neutron net-update f5050464-a1e4-4e19-8c04-3949a5cf0340 --dns_domain bigstack.co. neutron CLI is deprecated and will be removed in the future. Use openstack CLI instead. Updated network: f5050464-a1e4-4e19-8c04-3949a5cf0340 # openstack network show f5050464-a1e4-4e19-8c04-3949a5cf0340 +---------------------------+--------------------------------------+ | Field | Value | +---------------------------+--------------------------------------+ | admin_state_up | UP | | availability_zone_hints | | | availability_zones | nova | | created_at | 2020-02-04T06:41:08Z | | description | | | dns_domain | bigstack.co. | | id | f5050464-a1e4-4e19-8c04-3949a5cf0340 | | ipv4_address_scope | None | | ipv6_address_scope | None | | is_default | None | | is_vlan_transparent | None | | mtu | 1450 | | name | private | | port_security_enabled | True | | project_id | 03525522f7c547cd88627c626896d04a | | provider:network_type | vxlan | | provider:physical_network | None | | provider:segmentation_id | 100 | | qos_policy_id | None | | revision_number | 6 | | router:external | Internal | | segments | None | | shared | False | | status | ACTIVE | | subnets | 24d713e8-5db4-4fc5-bac0-747547737bb0 | | tags | | | updated_at | 2020-02-05T05:30:48Z | +---------------------------+--------------------------------------+ ``` ## Create a Virtual Machine on a private [network_id] {#create-a-virtual-machine-on-a-private-network_id} ```bash # openstack server create --image Cirros --flavor m1.tiny --nic net-id=f5050464-a1e4-4e19-8c04-3949a5cf0340 test-1 +-------------------------------------+----------------------------------------------------------+ | Field | Value | +-------------------------------------+----------------------------------------------------------+ | OS-DCF:diskConfig | AUTO | | OS-EXT-AZ:availability_zone | nova | | OS-EXT-SRV-ATTR:host | sky8 | | OS-EXT-SRV-ATTR:hypervisor_hostname | sky8 | | OS-EXT-SRV-ATTR:instance_name | instance-0000000f | | OS-EXT-STS:power_state | Running | | OS-EXT-STS:task_state | None | | OS-EXT-STS:vm_state | active | | OS-SRV-USG:launched_at | 2020-02-05T05:32:19.000000 | | OS-SRV-USG:terminated_at | None | | accessIPv4 | | | accessIPv6 | | | addresses | private=192.168.100.27 | | config_drive | | | created | 2020-02-05T05:32:01Z | | flavor | m1.tiny (5fb04908-6596-43bd-98e2-9bd3acb7d970) | | hostId | 56672bf7f406222f8d15759ae92bc92ea3e89098b8cff785ef1133a6 | | id | e136f2ad-3c33-40c9-9248-11cd5c49411e | | image | | | key_name | roy | | name | test-1 | | progress | 0 | | project_id | 03525522f7c547cd88627c626896d04a | | properties | | | security_groups | name='default' | | status | ACTIVE | | updated | 2020-02-05T05:32:19Z | | user_id | d23281f2c2d141af983071f86e53fa3c | | volumes_attached | id='fe6b225e-4ef8-47b0-b9b1-62cf3d9e57ce' | +-------------------------------------+----------------------------------------------------------+ ``` ## [port_id] Look up for network port ID {#port_id-look-up-for-network-port-id} ```bash # openstack port list +--------------------------------------+------------------------+-------------------+-------------------------------------------------------------------------------+--------+ | ID | Name | MAC Address | Fixed IP Addresses | Status | +--------------------------------------+------------------------+-------------------+-------------------------------------------------------------------------------+--------+ | 982ddbba-05ed-4665-be07-d7bb28311212 | | fa:16:3e:58:df:bb | ip_address='192.168.100.27', subnet_id='24d713e8-5db4-4fc5-bac0-747547737bb0' | ACTIVE | +--------------------------------------+------------------------+-------------------+-------------------------------------------------------------------------------+--------+ ``` ## Check show detail of network port by [port_id] {#check-show-detail-of-network-port-by-port_id} ```bash # openstack port show 982ddbba-05ed-4665-be07-d7bb28311212 +-----------------------+-------------------------------------------------------------------------------+ | Field | Value | +-----------------------+-------------------------------------------------------------------------------+ | admin_state_up | UP | | allowed_address_pairs | | | binding_host_id | sky8 | | binding_profile | | | binding_vif_details | port_filter='True' | | binding_vif_type | bridge | | binding_vnic_type | normal | | created_at | 2020-02-05T05:32:05Z | | data_plane_status | None | | description | | | device_id | e136f2ad-3c33-40c9-9248-11cd5c49411e | | device_owner | compute:nova | | dns_assignment | fqdn='test-1.cube.local.', hostname='test-1', ip_address='192.168.100.27' | | dns_name | test-1 | | extra_dhcp_opts | | | fixed_ips | ip_address='192.168.100.27', subnet_id='24d713e8-5db4-4fc5-bac0-747547737bb0' | | id | 982ddbba-05ed-4665-be07-d7bb28311212 | | ip_address | None | | mac_address | fa:16:3e:58:df:bb | | name | | | network_id | f5050464-a1e4-4e19-8c04-3949a5cf0340 | | option_name | None | | option_value | None | | port_security_enabled | True | | project_id | 03525522f7c547cd88627c626896d04a | | qos_policy_id | None | | revision_number | 9 | | security_group_ids | 74e6a165-9c94-47b5-89ba-21c8d113df17 | | status | ACTIVE | | subnet_id | None | | tags | | | trunk_details | None | | updated_at | 2020-02-05T05:32:19Z | +-----------------------+-------------------------------------------------------------------------------+ ``` ## [zone_id] Look for zone ID of domain {#zone_id-look-for-zone-id-of-domain} ```bash # openstack zone show bigstack.co. +----------------+--------------------------------------+ | Field | Value | +----------------+--------------------------------------+ | action | NONE | | attributes | | | created_at | 2020-02-05T08:43:12.000000 | | description | None | | email | hello@bigstack.co | | id | a475d193-7873-4f2a-9d90-c7792fae6734 | | masters | | | name | bigstack.co | | pool_id | 794ccc2c-d751-44fe-b57f-8894c9f5c842 | | project_id | 03525522f7c547cd88627c626896d04a | | serial | 1580898425 | | status | ACTIVE | | transferred_at | None | | ttl | 3600 | | type | PRIMARY | | updated_at | 2020-02-05T10:27:10.000000 | | version | 4 | +----------------+--------------------------------------+ ``` ## Check out the record list by [zone_id] (Before) {#check-out-the-record-list-by-zone_id-before} ```bash # openstack recordset list a475d193-7873-4f2a-9d90-c7792fae6734 +--------------------------------------+-------------------+------+--------------------------------------------------------+--------+--------+ | id | name | type | records | status | action | +--------------------------------------+-------------------+------+--------------------------------------------------------+--------+--------+ | 0f161f6e-6a8f-4d60-aeb4-56769bcba66c | bistack.co. | NS | sky8.cube.org. | ACTIVE | NONE | | 33d38c32-eac9-4fb4-a665-fcc0f3c57ac8 | bistack.co. | SOA | sky8.cube.org. c.l.com. 1580898425 3538 600 86400 3600 | ACTIVE | NONE | +--------------------------------------+-------------------+------+--------------------------------------------------------+--------+--------+ ``` ## [floating_ip_address] Create a Floating IP {#floating_ip_address-create-a-floating-ip} ```bash # openstack floating ip create internet +---------------------+--------------------------------------+ | Field | Value | +---------------------+--------------------------------------+ | created_at | 2020-02-06T04:27:21Z | | description | | | fixed_ip_address | None | | floating_ip_address | 192.168.1.143 | | floating_network_id | bdf01063-4500-4266-9363-36414ba6d252 | | id | b998ad59-0c9b-4d5a-8702-1df8c8490232 | | name | 192.168.1.143 | | port_id | None | | project_id | 03525522f7c547cd88627c626896d04a | | revision_number | 0 | | router_id | None | | status | DOWN | | updated_at | 2020-02-06T04:27:21Z | +---------------------+--------------------------------------+ ``` ## Attach the [floating_ip_address] to the [port_id] {#attach-the-floating_ip_address-to-the-port_id} ```bash # openstack floating ip set --port 982ddbba-05ed-4665-be07-d7bb28311212 192.168.1.143 ``` ## Check out the record list by [zone_id] (After) {#check-out-the-record-list-by-zone_id-after} ```bash # openstack recordset list a475d193-7873-4f2a-9d90-c7792fae6734 +--------------------------------------+---------------------+------+--------------------------------------------------------+--------+--------+ | id | name | type | records | status | action | +--------------------------------------+---------------------+------+--------------------------------------------------------+--------+--------+ | 0f161f6e-6a8f-4d60-aeb4-56769bcba66c | bistack.co. | NS | sky8.cube.org. | ACTIVE | NONE | | 33d38c32-eac9-4fb4-a665-fcc0f3c57ac8 | bistack.co. | SOA | sky8.cube.org. c.l.com. 1580898425 3538 600 86400 3600 | ACTIVE | NONE | | 0abfc156-fb0b-441a-af5b-f820ce2bfa0f | test-1.bigstack.co. | A | 192.168.1.143 | ACTIVE | NONE | +--------------------------------------+---------------------+------+--------------------------------------------------------+--------+--------+ ``` ## Show your virtual Machine {#show-your-virtual-machine} ```bash # openstack server list +--------------------------------------+--------+--------+---------------------------------------+--------+---------+ | ID | Name | Status | Networks | Image | Flavor | +--------------------------------------+--------+--------+---------------------------------------+--------+---------+ | e136f2ad-3c33-40c9-9248-11cd5c49411e | test-1 | ACTIVE | private=192.168.100.27, 192.168.1.143 | Cirros | m1.tiny | +--------------------------------------+--------+--------+---------------------------------------+--------+---------+ ``` ## Summary {#summary} In this use case, the address of a floating IP is published in the external DNS service in conjunction with the dns_name of its associated port and the dns_domain of the port’s network. The steps to execute in this use case are the following: - Assign a valid domain name to the network’s dns_domain attribute. This name must end with a period (.). - Boot an instance or alternatively, create a port specifying a valid value to its dns_name attribute. If the port is going to be used for an instance boot, the value assigned to dns_name must be equal to the hostname that the Compute service will assign to the instance. Otherwise, the boot will fail. - Create a floating IP and associate it to the port.